<div nz-row class="main-body">
    <div nz-col nzSpan="4">
        <app-discover-menu></app-discover-menu>
    </div>
    <div nz-col nzSpan="14">
        <app-discover-content></app-discover-content>
    </div>
    <div nz-col nzSpan="6">
        <app-discover-right></app-discover-right>
    </div>
</div>